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United States Patent | 5,314,218 |
Nadherny | May 24, 1994 |
A hatch cover lock with an automatic first locking mechanism for securing a removable hatch cover of a railway hopper car to the railway hopper car and secondary manually operated locking mechanism to secure the hatch cover to the hopper car in addition to the automatic first locking mechanism which allows the hatch cover to be opened from either side of the hopper car, and which cooperates to prevent accidental removal of the hatch cover and/or batten bar from the hopper car.
Inventors: | Nadherny; Rudolph E. (Naperville, IL) |
Assignee: | Ireco, Inc. (Chicago, IL) |
Appl. No.: | 008714 |
Filed: | January 22, 1993 |
Current U.S. Class: | 292/256.5; 292/11; 292/259R |
Intern'l Class: | E05C 003/30; B63B 019/14 |
Field of Search: | 292/DIG. 14,11,256.5,31,24,37,49,259 |
691752 | Jan., 1902 | Dawley | 292/256. |
768530 | Aug., 1904 | King | 292/256. |
3848912 | Nov., 1974 | Jensen et al. | 292/256. |
3884514 | May., 1975 | Praska | 292/256. |
4094542 | Jun., 1978 | Siblik | 292/256. |
4307670 | Dec., 1981 | Nadherny | 292/256. |